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Yet Another DC Box Fan | 18 comments (18 topical, editorial)
Re: Yet Another DC Box Fan (3.00 / 0) (#9)
by CmeBREW (smke833f@hotmail.com) on Thu Jul 10th, 2008 at 07:42:56 PM MST
(User Info)

That is very nice!  Thanks for sharing those pictures. I like the simple idea of the 5 watt resistors.  I only really use 2 speeds myself with my big floor fan.

With Electric bills starting now to go thru the roof and beyond, I think everyone is going to need one of those in EVERY room when they HAVE to shut the air conditioners off.  I like that box fan since it is kid safe and can fit into the window.
Do they give the ratings?

I use a 10" "camping fan" (7Watts/low) now to put in my window each night for a few hours (9pm-midnight) to pull  in cool night air from outside into my bedroom. And I always have the big floor fan on me all night!  Its starting to get really Hot around here now--but these make it bearable.



Re: Yet Another DC Box Fan (3.00 / 0) (#10)
by ghurd on Fri Jul 11th, 2008 at 08:35:08 AM MST
(User Info)

Factory motor? They probably gave ratings, but being off-grid, he removed the motor instantly.
Then he gave it to some nut who made it into a PMA.  :-/
"Feature Comforts". A Lowe's brand?
No sticker on the PMA motor now.  Tiny motor, maybe 3.25" dia?
Might be a sticker on the bottom of the 'box'.

The Pittman motors only say 48V, and a bunch of number strings Google and Ametek can't find.

He's working on another better suited to a 7" fan.  Guessing 350ma 1700RPM 12V?
Stupid eBay 24V Hanson 360RPM motors are really 3600RPM.  Glad I only bought 10.
Pulled over 2A, near stalled, with the above box fan blade.

[ Parent ]



Re: Yet Another DC Box Fan (3.00 / 0) (#18)
by ghurd on Wed Sep 3rd, 2008 at 08:53:11 AM MST
(User Info)

Only 2 months late.
The factory 3-speed motor was rated 120VAC 60Hz 0.75A.

Far cry from the old box fans.  2.1A.
G-

[ Parent ]



Yet Another DC Box Fan | 18 comments (18 topical, 0 editorial)

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